virtual oscilloscope

[thekop]

Hi

I was trying to make an oscilloscope,Ive 2 questions:

1)How do i get a selective channel's amplitude through my knob

2)How can I zoom when my VI is running

Thanks

[IanS]

Do you want to switch which wave you are taking the amplitude from? I would suggest trying out the "Select" function, which you can use to switch between two individual signals using a boolean input.

You can use the graph palette underneath the graph to zoom on a graph at any point, there are ways to do so programmatically, but I'm not sure if this is what you want to do? If so, you'll need to use property nodes.

I would suggest putting your program in a while loop with a stop button and some timing, so that you can respond to button presses without having to run the program again.

[thekop]

Can you expand on property nodes because I want a simultaneous zoom while the program is running which I am unable to achieve using the Graph Palette.

Thanks

[thekop]

And I'd like to switch between 4-5 waves if possible.